Carton



sept. 15, 19534 J, A ZM, JR 2,652,186

CARTON Filed March 8, 1947 2 Sheets-Sheet 2 J6 49 49 d? 7 3? v m v Y .23

6p *L l r Z9 E i;

29 ,#U'* J/J IN VEN TOR;

Patented Sept. 15, 1953 UNITED STATES OFFICE The present inventionrelates to improvements iiicartois',

""'ijiiugiijthe present invention will be described by reference to a'carton of uniform rectangular crest-,sectional contour from bottom totop, it willfbe obviciuskas the description proceeds that tljfeinvention" is,4 equally applicable to tapering cartonstliat is, cartonsof the nesting type.

object of the present invention is to providewan impro'vedcarton inwhich strength and ty' ardattaiiied with the use of relatively ugferjriate'riaI` AQ fu ,her'bbjr'ect isto provide an improved carton whichmaybe made from Vasimpleblanl.: in which waste-ge of material isminimized.

.A yfurther object istoV provide an improved carton which, although madeof `relatively thin material, may be readilyA sealed even though itcontains Vonlyno'n-rigid material.

i` furtheifobject is lto provide an improved carton which is sturdy inconstruction, relatively cheap to manufacture, neat in appearance, andwell adaptedn to hold fine grained matriial or alquidf A further objectis torprovidel an improved blank for forming a carton of the kindabovereferred to.

A further object is to provide an improved carton w'e'll adapted to meetthe needs of commercial service.

Further objects will appear as the description proceeds.

Referring to the. drawings- Figure V1 is a view of a blank adapted to beformed into a carton. whichvblank embodiesth principles of the presentinvention;

Figure 2 is a view in perspective of the blank having the four sidewalls thereof assembledin operative position,` but having the top andbottom closures thereof riot yet in operative position;

Figure Bis a view similar to Figure 2, but with the bottom Wall inoperative position and showing the top` closure at an intermediate stageof a'ssembly;

Figure 4 is a perspective View illustrating the top closure in a laterstage of assembly;

Figure 5 shows the completely sealed carton;

Figure 6 is a sectional view taken along the plane indicatedby thearrowsv-L- of Figure 5;

and

Figure '7 is a sectional view taken along the plane indicated by thearrows l--l of Figure 5.

Referring first to Figure 1, the numeral I! indicates a blank which maybe made from. a sheet 2 or cardboard or the like. The particular blankchosen for,` illustration is intended for a carton having uniformrectangular cross-section throughout its length, with end walls disposedin rightangular relationship with the side Walls. The invention isequally applicable to cartons of taperingconstruction, the. taperingcontours of the panels thereof being chosen to conform to the degree oftaper desired.

The'uppermost surface of the blank as viewed in Figure l will be theoutermost surface of the carton to be formed therefrom.

The blank Il has side edges I2 and I3 and is provided with a pluralityoficrease lines defining panels, a connector section, top and bottomnaps, tabs, web:cornersV andother parts to be described presently. l

Grease lines I4, l5 and I Sand the edge l2 define a panel Il. Creaselines I5,f i8, Ii] and 29 denne the next panel, 2i. Grease lines I9, 22,23 and 24 define the `next panel, 25. Crease lines 23, 25, 2l andZildefine the Inext panel, 29. Crease lines 27, 30, edge I3, and creaseline 3l define a connector section, 32. All of the crease lines referred'l to in this paragraph will be ruled into the blank Il on the undersurface thereof as the blank is viewed in Figure 1, so that said creaselines will bias the sections on the sides thereof to bend inwardly, thatis, toward the bottom side of the blank, it being remembered that Figurel shows the outer surface of the carton as uppermost. Said crease linesare indicated in solid lines in Figure l. Such crease lines, that is,those ruled infrom the side of the blank which is to be folded inwardly,will `be referred to as direct crease lines. Crease lines which areruled into the blank I Ion the top side as the blank is viewed in Figurel, are illustrated as solid lines with dots spaced therealong." Suchcrease lines will be referred to as reverse crease lines.

Crease line l5 is spaced from the crease line IS and the crease line23iisspaced from the crease line 21a distance equal to the width of thetwo opposite narrow side walls of the carton. The section between thecrease line 21 and the edge I3., `that is, the section `32, is aconnector section and is utilized for securing the blank into acontinuous outline rectangular in cross-section.

lI'he panel lll provides a relatively wide side wail` or panelof` thecarton and will be referred to hereinafter as the first wall or panel.

The panel 2i provides a relatively narrow side wall or panei of thecarton and will be referred to hereinafter as the second wall or panel.

The panel 25 provides a relatively wide side wall or panel of the cartonand will be referred to hereinafter as the third wall or panel.

The panel 29 provides a relatively narrow side wall or panel of thecarton and will be referred to hereinafter as the fourth wall or panel.

The panel I1 (the first panel) is provided with the flap 33 bounded bythe crease line I4, the edge 34 which will preferably be offset inwardlyof the edge I2, the reverse crease line 35 and the reverse crease line36. The reverse crease line 36 is offset toward the edge 34 from theline I a short distance to permit the ready folding of the flap 33 intothe Space between the panels I 1 and 25 of the carton. Said flap 33outwardly of the reverse crease line'35 is provided with the web 31,having end edges 38 and 39 disposed in 45 degree relationship with thereverse crease line 35. The flap 33 at the region thereof along thereverse crease line 36 is provided with the web 48 bounded by thereverse crease line 36, the edge 39, the slit 4I, and the direct creaseline 42. Connected to the panel 2I (the second panel) is the tab 43which is bounded by the crease line I8, the crease line 42, the slit 4I,the edge 44, edge 45, and the reverse crease line 46. Said crease lines42 and 46 extend in 45 degree relationship with the crease line i8 up topoints lying in the broken line 41. The region bounded by the creaseline I8, the crease line 42, the broken line 41, and the reverse creaseline 46 forms a web 48 which is part of the tab 43. That portion of thetab 43 between the broken line 41 and the edge 44 is indicated by thenumeral 48a. That portion of the blank embodied in the web 46 and theweb 48 joined at the crease line 42 constitutes a web-corner, thefunction of which will appear presently.

The panel (the third panel) is provided with the flap 49 bounded by thecrease line 22, the crease line 5U (which extends from the crease line22 to the edge 5I, which edge 5I is in alignment with the broken line41), the edge 52 in alignment with crease line 50, the crease line 53,edge 54 and crease line 55. The crease line 55 and edge 54 will be inalignment with each other. However, the line defined on the one side bythe crease line 59 and the edge 52 and the line defined on the otherside by the crease line 55 and edge 54 will be offset inwardly of thecrease lines I9 and 23, respectively, to facilitate folding.

Further to facilitate folding of the top closure of the carton, thecrease line 22 should be offset slightly above the crease lines I8 and26 (which may be in alignment with each other). The crease line I4should be offset slightly below the crease lines I8 and 26 and thecrease line 30 should be offset slightly below the crease line I4. Theamount of the offsets will depend upon the thickness of the material.The amount of offset of the edge 34 relative to the edge I2; of creaseline 36 relative to crease line I5; of edge 52 and crease line 50relative to crease line I9; of edge 54 and crease line 55 relative tocrease line 23; of crease line 22 relative to crease lines I8 and 26;and of crease line 3l] relative to crease lines I8 and 26 will be enoughgreater than the thickness of the material to facilitate folding whileproviding a good t. Preferably the offset of crease line below thecrease lines I8 and 26 will be about twice the offset of crease lines I8and 26 below crease line 22. The flap 49 is provided outwardly of thecrease line 53 with the web 56 having its long dimension parallel withthe crease line 22. The web 56 has its lateral extremities cut off alongthe edges 51 and 58 disposed in 45 degree relationship with the creaseline 53. The section defined by the crease line 56, edge 5I and thereverse crease line 46 is a web indicated by the numeral 59. Said web 59and the web 48 constitute a web-corner. The crease line 42 and thereverse crease line 46 intersect the crease line I8 at the junctures ofcrease lines I5 and I9 with said crease line I8.

Disposed above the panel 29 (fourth panel) is the tab 66 bounded by thecrease line 26, the reverse crease line 6I, the edge 62, the edge 63,the slit 64 and the crease line 65. Reverse crease line 6I is disposedin symmetrical relationship with the crease line 65 and they extend in45 degree relationship with crease line 26 from the junctures of creaseline 26 with crease lines 23 and 21, respectively, to their points ofintersection with the edge 62 and slit 64. Said points of intersectionlie in the broken line 66 which is parallel with the crease line 26.

The numeral 61 indicates an edge in alignment with the broken line 66,which edge, with crease line 55 and reverse crease line 6I, defines aweb indicated by the numeral 68.

Extending above the connector section 32 is the flap 69, said flap 69being joined to the section 32 by means of the crease line 36. Said flap69 is provided with the web 1I) connected to the flap 69 by means of thereverse crease line 1I.

That portion of the tab 69 bounded by the crease line 26, reversecreasevline 6I, the broken line 66, and the crease line 65, constitutesa web indicated by the numeral 12. Webs 68 and 12 constitute aweb-corner and webs 16 and 12 constitute another web-corner, bothpromoting the sift-proofness of the carton. The tabs 43 and 63 areadapted to be folded down to form part of the top closure of the carton,and preferably their dimensions from the crease lines IS and 26,respectively, will be slightly less than the cross dimension of thepanel I1 or panel 25, so that the edges 44 and 63 of said tabs will notquite meet.

As indicated above, the webs 48, 48 and 59 associated with the tab 43constitute a web-corner assembly, and the webs 68, 12 and 16 associatedwith the tab 69 constitute another web-corner assembly for promotingtight sealing of the top of the carton.

lit will be noted that the flaps 33 and 49 are of substantially the samewidths as their corresponding panels 33 and 49, being only sufficientlynarrower than said panels to permit ready folding down onto the formedcarton. The altitude of each of said flaps 33 and 49 is approximatelyequal to the width of the panels 2l and 29. It will be noted also thatthe tabs 43 and 66 are of less width than their corresponding panels 2Iand 29, and that the iiap 33 and the flap 66 are provided with webs 46and 18, respectively, which project laterally from said flaps intoadjacency with the respective tabs 43 and 69. The edge 48a of the tab 43is spaced from the edge 52 of the flap 49 (at least adjacent to the web59) a distance equal to the width of said web .5B- that is, a distanceequal to the length of the edge 5I. Furthermore, the edge 62 of the tab69 is spaced from the edge 54 of the flap 49 (at least adjacent to theweb 68) a distance equal to the Width of said web 68-that is, a distanceequal to the length of the edge 61. in other language, a space isprovided between the flap 49 of the third panel and the adjacent flaps43 and 60, which space is sufficient to provide clearance in thesubsequent folding of the Expressed each of said flaps having a webswung thereon, each of said webs having a beveled end, said second panelbeing provided with a tab having web corners connecting it with theflaps of said first and third panels, said tab of said second panelbeing of less width than that part of said second panel adjacent to itstab, said connector section being provided with a iiap swung thereonsaid fourth panel being provided with a tab having web cornersconnecting it with the flaps of said third panel and said connectorsection, said tab of said fourth panel being of less width than theportion of said fourth panel adjacent to its tab, the flaps of saidfirst panel and said connector section having laterally extending websintegrally united with the web corners of said second and fourth panels,said webs of said iiaps of said first panel and said connector sectionextending into adjacency with the sides of the tabs of said second andfourth panels, the two opposite sides of the iiap cf said third panelbeing free of webs whereby to provide clearance on both sides of saidlast mentioned flap, said web corners connecting said tabs with the iiapof said third panel having reverse crease lines communicating with thecrease lines between said second and third panels and between said thirdand fourth panels, said web corners connecting said tabs with the flapsof said first panel and of said connector section having direct creaselines communicating respectively with the crease line between said firstand second panels and the crease line between said fourth panel and saidconnector section.

3. In a blank, in combination, a first panel,

a second panel, a third panel, a fourth panel and a connector section,said panels being defined and joined together and to said connectorsection by crease lines, said first panel having a iiap swung thereon,said third panel having a flap swung thereon, each of said two flapshaving side edges spaced apart a distance equal to its axis of swing andan altitude approximately equal to the width of said second and fourthpanels, each of said flaps having a web-swung thereon, each of said webshaving a beveled end, said second panel being provided with a tab havingweb corners connecting it with the flaps of said first and third panels,said tab of said second panel being of less width than that part of saidsecond panel adjacent to its tab, said connector section being providedwith a flap swung thereon said fourth panel being provided with a tabhaving web corners connecting it with the flaps of said third panel andsaid connector section, said tab of said fourth panel being of lesswidth than the portion of said fourth panel adjacent to its tab, theiiaps of said first panel and said connector section having laterallyextending webs integrally united with the web corners of said second andfourth panels, said webs of said iiaps of said first panel and saidconnecter section extending into adjacency with the sides of the tabs ofsaid second and fourth panels, the two opposite sides of the flap ofsaid third panel being free of webs whereby to provide clearance on bothsides of said last mentioned ila-p, said web corners connecting saidtabs with the iiap of said third panel having reverse crease linescommunicating with the crease lines between said second and third panelsand between said third and fourth panels, said web corners connectingsaid tabs with the flaps of said first panel and of said connectorsection having direct crease lines communicating re- 8 spectively withthe crease line between saidV first and second panels and the creaseline between said fourth panel and said connector section, said creaselines defining and joining said panels and said connector sectionbiasing said panels and connector section to fold inwardly.

4. In a carton, in combination, a first panel, a second panel, a thirdpanel, a fourth panel and a connector section, said panels being delinedand joined together and to said connector section by crease lines, saidrst panel having a iiap, said flap at its swinging edge being providedwith a web having beveled ends, said third panel having a iiap, saidlast mentioned flap being provided at its swinging edge with a webhaving beveled ends, said second panel being provided with a tab havingweb corners connecting it with the flaps of said first and third panels,said flaps of said second panel being of less width than that part ofsaid second panel adjacent to its tab, said connector section beingprovided with a flap swung thereon said fourth panel being provided witha tab having web corners connecting it with the iiaps of said thirdpanel and said connector section, said tab of said fourth panel being ofless width than that part of said fourth panel adjacent to its tab, saidconnector section including a flap, the flaps of said first panel andsaid connector section having laterally extending webs integrallyconnected respectively with the tabs of said second and fourth panels,the web of the flap of said iirst panel being adhesively secured to theiiap of said third panel, said iiaps of said first and third panelsbeing approximately co-extensive in width with their correspondingpanels, said flap of said first panel overlying the iiap of saidconnector section, said tabs of said second and fourth panels overlyingthe flap of said first panel, the aps of said third panel overlying thetabs of saidsecond and fourth panels.

5. In a carton, in combination, a first panel, a second panel, a thirdpanel, a fourth panel and a connector section, said panels being denedand joined together and to said connector section by crease lines, saidfirst panel having a flap, said flap at its swinging edge being providedwith a web having beveled ends, said third panel having a flap, saidlast mentioned flap being provided at its swinging edge with a webhaving beveled ends, said second panel being provided with a tab havingweb corners connecting it with the flaps of said first and third panels,said flaps of said second panel being of less width than that part' ofsaid second panel adjacent to its tab, said connector section beingprovided with a iiap swung thereon said fourth panel being provided witha tab having web corners .connecting it with the flaps of said thirdpanel and said connector section, said tab of said fourth panel being ofless width than that part of said fourth panel adjacent to its tab, saidconnector section including a flap, the flaps of said first panel andsaid connector section having laterally extending webs integrallyconnected respectively with the tabs of said second and fourth panels,the web of the flap of said first panel being adhesively secured to theflap of said third panel, said flaps of said first and third panelsbeing approximately co-extensive in width with their correspondingpanels, said flap of said first panel overlying the iiap of saidconnector section, said tabs of said second and fourth panels overlyingthe iap of said first panel, the flaps of said third panel overlying thetabs of said second and fourth panels; the web of said third panel beingfolded under, the beveled ends of said last mentioned web approximatelyfitting the web corners connecting with said rst panel and saidconnector section.

6. A container comprising pairs of Walls providing a tubular body, theWalls of each pair being disposed on opposite sides of said tubularbody, said walls being provided with closure members at one end of thetubular body, the 10 closure member of one wall of one pair of wallsconstituting an inner closure member, the closure member of the oppositewall of said pair of Walls constituting an outer closure member, theclosure members of the other pair of Walls constituting intermediateclosure members disposed between said inner and outer closure members,said inner closure member having a sealing iiap extension on theswinging edge thereof and hingedly connected thereto and adhesively se-10 cured to the underside of the outer closure member, said flapextension and intermediate closure members lying in a common planeflatly against the inner closure member, said intermediate closuremembers being recessed at the rear thereof to permit the ap extension tolie atly against the inner closure member and in the plane of theintermediate closure members when the outer closure member is in closedposition.

JULIUS A. ZINN, JR.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 748,020 Runtz Dec. 29, 1903 1,414,236 Walmsley Apr. 25, 19221,987,647 Wellman Jan. 15, 1935 2,349,241 Arneson May 23, 1944 2,390,909Zinn Dec. 11, 1945

